Index: fusl/src/complex/csinhf.c |
diff --git a/fusl/src/complex/csinhf.c b/fusl/src/complex/csinhf.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..49697f02f4a35359bce63973f8b446adee6138fb |
--- /dev/null |
+++ b/fusl/src/complex/csinhf.c |
@@ -0,0 +1,90 @@ |
+/* origin: FreeBSD /usr/src/lib/msun/src/s_csinhf.c */ |
+/*- |
+ * Copyright (c) 2005 Bruce D. Evans and Steven G. Kargl |
+ * All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions |
+ * are met: |
+ * 1. Redistributions of source code must retain the above copyright |
+ * notice unmodified, this list of conditions, and the following |
+ * disclaimer. |
+ * 2. Redistributions in binary form must reproduce the above copyright |
+ * notice, this list of conditions and the following disclaimer in the |
+ * documentation and/or other materials provided with the distribution. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+/* |
+ * Hyperbolic sine of a complex argument z. See s_csinh.c for details. |
+ */ |
+ |
+#include "libm.h" |
+ |
+static const float huge = 0x1p127; |
+ |
+float complex csinhf(float complex z) |
+{ |
+ float x, y, h; |
+ int32_t hx, hy, ix, iy; |
+ |
+ x = crealf(z); |
+ y = cimagf(z); |
+ |
+ GET_FLOAT_WORD(hx, x); |
+ GET_FLOAT_WORD(hy, y); |
+ |
+ ix = 0x7fffffff & hx; |
+ iy = 0x7fffffff & hy; |
+ |
+ if (ix < 0x7f800000 && iy < 0x7f800000) { |
+ if (iy == 0) |
+ return CMPLXF(sinhf(x), y); |
+ if (ix < 0x41100000) /* small x: normal case */ |
+ return CMPLXF(sinhf(x) * cosf(y), coshf(x) * sinf(y)); |
+ |
+ /* |x| >= 9, so cosh(x) ~= exp(|x|) */ |
+ if (ix < 0x42b17218) { |
+ /* x < 88.7: expf(|x|) won't overflow */ |
+ h = expf(fabsf(x)) * 0.5f; |
+ return CMPLXF(copysignf(h, x) * cosf(y), h * sinf(y)); |
+ } else if (ix < 0x4340b1e7) { |
+ /* x < 192.7: scale to avoid overflow */ |
+ z = __ldexp_cexpf(CMPLXF(fabsf(x), y), -1); |
+ return CMPLXF(crealf(z) * copysignf(1, x), cimagf(z)); |
+ } else { |
+ /* x >= 192.7: the result always overflows */ |
+ h = huge * x; |
+ return CMPLXF(h * cosf(y), h * h * sinf(y)); |
+ } |
+ } |
+ |
+ if (ix == 0 && iy >= 0x7f800000) |
+ return CMPLXF(copysignf(0, x * (y - y)), y - y); |
+ |
+ if (iy == 0 && ix >= 0x7f800000) { |
+ if ((hx & 0x7fffff) == 0) |
+ return CMPLXF(x, y); |
+ return CMPLXF(x, copysignf(0, y)); |
+ } |
+ |
+ if (ix < 0x7f800000 && iy >= 0x7f800000) |
+ return CMPLXF(y - y, x * (y - y)); |
+ |
+ if (ix >= 0x7f800000 && (hx & 0x7fffff) == 0) { |
+ if (iy >= 0x7f800000) |
+ return CMPLXF(x * x, x * (y - y)); |
+ return CMPLXF(x * cosf(y), INFINITY * sinf(y)); |
+ } |
+ |
+ return CMPLXF((x * x) * (y - y), (x + x) * (y - y)); |
+} |